Acroprint MasterSync Wireless Synchronized Clock Systems - Manual (Page 5)

12 or 24 Hour Operation
Your system is factory set for 12-hour operation; you can skip this step if you will operate on 12-hour time.
If AM or PM is on the display, then the 12-hour option is selected. If neither AM nor PM is on the display, then
the 24-hour option is selected.
To change from/to 12 hour operation:
Push and hold the “MODE” button located on the front of the transmitter until “FORMAT” appears. Push the
“SET” button to Select 12-hour or 24-hour operation.
Once the “format” is selected, push the Mode button to return to programming other
features.
Daylight Saving Time
Your transmitter is factory set to have DST on and the display will show “DST+”. If you want to turn it off, push
“MODE” until you see “DST”, then push the “SET” button to elect “OFF”. The letters “DST+” (Daylight Saving
Time) will be displayed when adjustment for Daylight Saving Time is active. The letters “DST” will be displayed
when adjustment for Daylight Saving Time is inactive. If neither “DST+” nor “DST” is on the display, Daylight
Saving time is inactive.
Detailed Transmitter Operation
The first time the power supply is attached to the transmitter, the transmitter will be in program mode and
the “POWER LED” will light. Program your transmitter to the desired settings. The transmitter will initially show
12:00:00 and increment each second until it receives a valid time signal from the GPS Receiver. The “GPS” LED
light turns on when the time information from the GPS satellite is valid and the symbol “oO” will appear on
the upper right corner of display.
Note: The transmitter will transmit the displayed time even if it is not GPS time.
Once the transmitter receives the GPS Receiver time signal, the transmitter sets its internal clock
to that time and will display the correct time/date. The transmission signal is an FM radio signal in
the 467 MHz range that will transmit time data on one of the 10 available frequencies. The frequency
you will use has been approved by the FCC (Federal Communications Commission) and the system
will be licensed by the FCC in the name of the end user at that location.
The transmitter continually monitors the GPS Receiver and will update its internal clock with the time data
it receives. The transmitter transmits the time signal at 10 seconds, 30 seconds, and 50 seconds past each
minute and on each minute.
MasterSync
product manual -5
TM